Screws are made using different machining.
The method depends on application and design.
Whirlwind milling and CNC milling are key.
Whirlwind milling uses a rotating cutter head. It's great for long, slender screws.
Good for transmission and feed screws. It has high efficiency and a good finish.
CNC milling uses a rotating cutting tool. It offers high versatility and control.
Screws can have complex geometries. Ideal for mixing, extrusion, and molding.
Screw complexity impacts their cost. Extrusion and injection screws are pricier. They have complex designs. They require tight tolerances. Specialized materials are needed.